As part of Road Trip 2015, CNET visits Mcity, a 32-acre fake city in Michigan designed to test self-driving cars' navigation and communication abilities -- and to keep research from migrating to Silicon Valley.

Many scientists and technology experts agree that artificial intelligence development should not involve military weaponry, as the decision to kill humans may fall exclusively into the hands of robots. It sounds like science fiction, but it's a real concern among the scientific community.

Ashley and Khail discuss a petition to ban autonomous weapons, one man's silly idea to load Half-Life 2 on his Android Wear smartwatch and Stanford University's AI program to teach robots to play games. #TDNewAI

Polarr opted not to build an app specifically for Apple's iOS software, instead going the less-traveled route of using more-universal Web technologies. That decision is now paying off with droves of downloads.